Achievement of reactor-relevant 2 in low-q divertor discharges in the doublet III-D tokamak

T. S. Taylor, E. J. Strait, L. Lao, A. G. Kellman, T. H. Osborne, K. Burrell, Ming-Sheng Chu, J. C. Deboo, H. Fukumoto, P. Gohil, R. Groebner, C. Hsieh, G. Jackson, S. Kinoshita, P. Lomas, R. Snider, H. Stjohn, R. D. Stambaugh, R. E. Stockdale, A. D. Turnbull

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Abstract

A volume average toroidal 2 of 6.2% has been obtained with 10 MW of hydrogen neutral beam injection into deuterium divertor discharges in DIII-D. High 2 discharges were maintained quiescently for many energy confinement times in elongated, =2, divertor discharges where the safety factor at the 95% flux surface was near 2. The maximum 2 calculated to be stable against ideal kinks and ideal ballooning modes is 8.5% 9.5%, confirming that these I/aBS 2.5 MA/m T discharges are some distance below the stability limit.

Original languageEnglish
Pages (from-to)1278-1281
Number of pages4
JournalPhysical review letters
Volume62
Issue number11
DOIs
Publication statusPublished - 1989 Jan 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Taylor, T. S., Strait, E. J., Lao, L., Kellman, A. G., Osborne, T. H., Burrell, K., Chu, M-S., Deboo, J. C., Fukumoto, H., Gohil, P., Groebner, R., Hsieh, C., Jackson, G., Kinoshita, S., Lomas, P., Snider, R., Stjohn, H., Stambaugh, R. D., Stockdale, R. E., & Turnbull, A. D. (1989). Achievement of reactor-relevant 2 in low-q divertor discharges in the doublet III-D tokamak. Physical review letters, 62(11), 1278-1281. https://doi.org/10.1103/PhysRevLett.62.1278